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प्रश्न
Give a scientific explanation.
Bleaching powder has the odour of chlorine.
उत्तर
Chlorine is the main ingredient in bleaching powder. When exposed to air, bleaching powder reacts with carbon dioxide in the air to produce calcium carbonate and chlorine. Thus, it smells of chlorine.
CaOCl2 + CO2 `->` CaCO3 + Cl2
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